Search results for "FUNCTIONAL"
showing 10 items of 4822 documents
Hydrogen bond-mediated conjugates involving lanthanide diphthalocyanines and trifluoroacetic acid (Lnpc2@TFA): Structure, photoactivity, and stability
2020
The interaction between lanthanide diphthalocyanine complexes, LnPc2 (Ln = Nd, Sm, Eu, Gd, Yb, Lu
The "Laparoscopic Neuro-Navigation" -- LANN: from a functional cartography of the pelvic autonomous neurosystem to a new field of laparoscopic surgery
2006
It is the objective of this study to etablish the technique of laparoscopic exposure of all pelvic somatic and autonomous nerves. In all our patients who underwent a laparoscopic surgical approach of the retroperitoneum, exposure and assessment of the exposed nerves using laparoscopic neuro-navigation were performed. Laparoscopic surgery allows the surgical approach to all pelvic nerves, particularly to the sciatic nerve, the pudendal nerve and the splanchnic pelvic nerves. We describe a cartography of the functional anatomy of the pelvic plexus and elaborate on the concept of "laparoscopic pelvic functional surgery". © 2004 Taylor & Francis.
On the generalization of the Boltzmann equation
1974
Starting from the Liouville equation and making use of projection operator techniques we obtain a compact equation for the rate of change of then-particle momentum distribution function to any order in the density. This equation is exact in the thermodynamic limit. The terms up to second order in the density are studied and expressions are given for the errors committed when one makes the usual hypothesis to derive generalized Boltzmann equations. Finally the Choh-Uhlenbeck operator is obtained under additional assumptions.
Functional response of suspension feeding anuran larvae to different particle sizes at low concentrations (Amphibia)
1992
The influence of particle size, initial particle concentration and larval stage on the ingestion rate, ‘retention efficiency’, and filtering rate of anuran larvae with varying filter apparatus anatomy and different life histories was investigated for four species. Larvae of premetamorphic Stages 28 and 32 and prometamorphic Stage 40 were selected for filtering experiments on the basis of their different growth rates. Three different sizes of silica gel particles were offered as mock food. Particle concentration was measured photometrically. The Michaelis-Menten model was used to describe the dependency of ingestion rate, filtering rate, and ‘retention efficiency’ upon initial particle conce…
Fast and green: Sustainable rapid-prototyping of microfluidic chips on polylactic acid substrates
2018
This paper reports novel ways to bond bio-based polylactic acid (PLA) substrates for the production of sustainable, single-use, microfluidic components. A laser-based, fast (minutes) fabrication process for multi-layer microfluidic devices in PLA was reported recently but in that report, demonstrator devices were bonded with adhesive tape, which significantly reduced the devices transparency. In this paper, we propose two novel ways to bond PLA substrates, which alleviate the need for adhesives, and enable optimal device transparency.
Sabratha. La necropoli a Nord-Est del Teatro nell'insula 8 della Regio IV e il riuso dello spazio urbano a scopo funerario
2012
The cemetery (m 29 x 39), excavated and restored by G. Caputo in the Thirties of the twentieth century, borders westwards the cardo which leads to the Early Christian churches of Regio III, and southwards the Theatre decumanus. The burial area comprises 84 tomb sub-divo, violated or with the gravestones moved. The burial types are: 1) the forma, attested by 43 specimens, 2) the case, rectangular or anthropomorphic, with 26 specimens, 3) nine cupae, characterized by a semi-cylindrical crown placed directly on the gravestones or on a base of limestone blocks, and 4) the mound, only one example. The space organization seems to follow clear rules: all the burials are in fact concentrated in the…
Opale: Photonische Kristalle
2007
Opale sind selbstorganisierte, kubisch dichtest gepackte Kolloidkristalle mit Kolloid-Durchmessern im Nanometer- und Submikrometerbereich. Aufgrund der periodisch modulierten Dielektrizitatskonstante bilden sich photonische Bandlucken aus, so dass die Ausbreitung von Licht mit Wellenlangen in der Grosenordnung der Gitterkonstanten unterdruckt wird. Dies erklart u.a. den brillianten Farbeindruck. Opale konnen synthetisch aus Polymer- oder Metalloxidkolloiden in einem Bottom-up-Prozess hergestellt und auf vielfaltige Weise chemisch funktionalisiert, strukturiert oder als Template fur ihre invertierten Strukturen verwendet werden. Anwendungsgebiete reichen von optischen Chips, Farbdisplays und…
DFT study of a singleF center in cubic SrTiO3 perovskite
2006
Various properties of a cubic phase of SrTiO3 perovskite containing single F centers (neutral oxygen vacancies), including energies of their formation and migration, were simulated using different formalisms of density functional theory (DFT) as implemented into CRYSTAL-2003 and VASP computer codes. The lattice relaxation around the F center was found to be sensitive to both shape and size of supercells used. The larger the supercell, the closer the defect energy level in the bandgap lies to the conduction band bottom. It approaches the optical ionization energy of 0.49 eV for 270- and 320-atom supercells, where the distance between neighboring defects increases up to four lattice constants…
Melt development of biphasic functionally graded scaffold
2016
Interface tissue engineering requires scaffolds that temporary replace the mechanical function of transition regions between two adjacent tissues. The presence of multi-phasic bio-structures that gradually change are typical features of interface tissues such as ligament-to-bone, tendon-to-bone and cartilage-to-bone. In this work, bi-layered scaffolds (BLS) composed by PLA with pores in the range of 90-110 µm and PCL with pores ranging from 5 to 40 µm were prepared by combining melt mixing, compression molding and particulate leaching. The principal advantages of this method lay in the absence of organic solvent during the preparation and in the easy control and high predictability of poros…
Nozīmes veidošana lietišķajos rakstos
2017
Šajā pētījumā analizēta nozīmes veidošana laikraksta ‘The Economist’ ievadrakstu virsrakstos, apakšvirsrakstos un ievados, kā arī laikraksta ‘The Financial Times’ titulrakstu virsrakstos un apakšvirsrakstos. Pētījuma mērķis bija analizēt nozīmes veidošanu, pētot teikumu un vārdkopu aspektu, situācijas veidu un funkcionālo koherenci. Lai to sasniegtu, tika analizēti 15 laikraksta ‘The Economist’ rakstu virsraksti, apakšvirsraksti un ievadi, kā arī 13 laikraksta ‘The Financial Times’ rakstu virsraksti un apakšvirsraksti. Izmantojot Komrija (1976), Smitas (1991) un Van Dijka (1988) atziņas, pētījumā secināts, ka laikraksta ‘The Economist’ rakstu pirmie elementi ir savstarpēji saistīti ar funkc…